References
Geoffrey Hellman
Foundational frameworks
2011
in: Foundational theories of classical and constructive mathematics, Dordrecht : Springer
Modal-structural mathematics
1990
in: Physicalism in mathematics, Dordrecht : Springer
Toward a modal-structural interpretation of set theory
1990
Synthese 84/3
On nominalism
1001
Philosophy and Phenomenological Research 62/3